Numbers 16:3

and they gathered themselves together against Moses and against Aaron, in a formal organization, with the intention of ousting the leaders instituted by God, and said unto them, Ye take too much upon you, you have had the leadership long enough, seeing all the congregation are holy, every one of them, and the Lord is among them; wherefore, then, lift ye up yourselves above the congregation of the Lord? Their argument was that, since the entire nation had been called to be the holy people of Jehovah, Exodus 19:5, therefore they all had an equal right to the priesthood and to the leadership, and any member might claim its rights and execute its duties. The rebels entirely overlooked the fact that God was responsible for the present arrangement, and that He had made the obedience of the children of Israel to the terms of the covenant His condition when He called them to be His people.